"The issue is advertised as featuring a collaboration between Ken Garing and me, with me on story and Ken on art, but there's an issue with this and I felt the need to make it clear," he wrote on his blog.

"The story as published does not entirely reflect what we conceived and I originally wrote.

"I'm going to make this as quick possible as there's a lot going on in the world that actually matters, but I felt like, after the warm reception to Shutter and Planetoid, some people reading this might buy comics with our names on them and thought it was unfair to them to not say something.

"The story Ken and I conceived together, which I scripted, ended up coming back in a proof PDF where - despite Ken's art looking even better than ever - our story and my dialog were drastically altered, specifically our ending," he continued.

"We were told by editorial that it was locked in and set for publication without further explanation as to what happened or why."

Keatinge added that he was unsure whether readers will notice the changes, and that they may have made the story better, but felt "uncomfortable taking credit for it".

Vertigo Group Editor Will Dennis later criticized the post on Twitter.